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Rekkuzo
Lord EmperorButto



Registered: 10/09/07
Posts: 246
Loc: Nor'East
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Math help.
#7910169 - 01/21/08 03:48 PM (16 years, 11 days ago) |
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How do I figure out:
e^2x - e^x =6
How do I solve for x?
I'm stumped.
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Oracle Of Delphi
I, Phantom



Registered: 06/23/02
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Re: Math help. [Re: Rekkuzo]
#7910177 - 01/21/08 03:50 PM (16 years, 11 days ago) |
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Sell Your Soul
Nutmeg shaman



Registered: 03/15/00
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Re: Math help. [Re: Rekkuzo]
#7910183 - 01/21/08 03:51 PM (16 years, 11 days ago) |
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Quote:
Rekkuzo said: How do I figure out:
e^2x - e^x =6
How do I solve for x?
I'm stumped.
e^2x = (e^x)^2 let z=e^x
z^2-z=6 Solve for z using standard quadratic methods.
Then: x=ln z
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learningtofly
Ancient Aliens



Registered: 05/21/07
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natural log is your friend
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fee
Im he who is the


Registered: 01/16/03
Posts: 18,238
Loc: amsterdam
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wtf does ^ stand for?
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blankk said to fee: btw you're a total fucking psychedelic pimp Turtletotem said: I want to become a sun worshipper, so next time an atheist smugly asks me where god is, I can point smugly at the sun and laugh my ass off. Then I drive away in my solar powered piece of shit car, cool stuff man. And then I go kill a bitch because the flaming orb in the sky told me to do so, and I don't know, oppress a few minorities here and there in the name of nuclear fusion? Religion is fun.
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Sell Your Soul
Nutmeg shaman



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Re: Math help. [Re: fee]
#7910196 - 01/21/08 03:53 PM (16 years, 11 days ago) |
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^ means to the power of ..
Example: 5^3 = 5*5*5 and 6^4 = 6*6*6*6
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Rekkuzo
Lord EmperorButto



Registered: 10/09/07
Posts: 246
Loc: Nor'East
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Yay, thank you.
I got ln(3)
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Edited by Rekkuzo (01/21/08 04:06 PM)
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Cepheus
Balance




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Re: Math help. [Re: Rekkuzo]
#7910221 - 01/21/08 04:01 PM (16 years, 11 days ago) |
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e^2x - e^x = 6.
log both sides:
ln(2x) - ln(x) = 6
using the laws of logs: ln(2x/x) = 6
and as andyistic said:
ln(x) = 6 x = e^6.
-------------------- "I only ever hope to reach equilibrium, in Nature's matrix, in line with the meridian" ~ Jehst
"...and I know that I have to keep breathing, as tomorrow the sun will rise, who knows what the tide will bring?" Free Spore Ring Europe Send any spare spore prints you might have and help the distribution
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Oracle Of Delphi
I, Phantom



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Re: Math help. [Re: Rekkuzo]
#7910224 - 01/21/08 04:02 PM (16 years, 11 days ago) |
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doesnt it mean to look at the post above, as in referencing it?
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Sell Your Soul
Nutmeg shaman



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Re: Math help. [Re: Cepheus]
#7910236 - 01/21/08 04:05 PM (16 years, 11 days ago) |
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Um, that's not what I said. Please check above, thanks.
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Rekkuzo
Lord EmperorButto



Registered: 10/09/07
Posts: 246
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Thanks for the help. I achieved the correct answer of ln(3).
Is that the simplest way to do it?
>_< I really hate math sometimes. Just when I get the hang of integrating and shit they throw in stuff that requires the quadratic equation, which I barely remember.
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Sell Your Soul
Nutmeg shaman



Registered: 03/15/00
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Re: Math help. [Re: Rekkuzo]
#7910304 - 01/21/08 04:18 PM (16 years, 11 days ago) |
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Depends on how you define "simple". It is very straight-forward and prone to few errors. It sure beats punching random numbers into a calculator until something pops up that fits the equation.
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Cepheus
Balance




Registered: 04/19/06
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I must be missing something here 0.o
-------------------- "I only ever hope to reach equilibrium, in Nature's matrix, in line with the meridian" ~ Jehst
"...and I know that I have to keep breathing, as tomorrow the sun will rise, who knows what the tide will bring?" Free Spore Ring Europe Send any spare spore prints you might have and help the distribution
Open Source. Freedom. GNU/Linux Addicting is not a word.
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LeftyBurnz
Mr. I Eat Butthole



Registered: 06/21/05
Posts: 24,570
Loc: FL
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Re: Math help. [Re: Rekkuzo]
#7910383 - 01/21/08 04:28 PM (16 years, 11 days ago) |
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Quote:
Rekkuzo said: How do I figure out:
e^2x - e^x =6
How do I solve for x?
I'm stumped.
take it, add a crumple, and throw it the fuck out the window.
god i hate math.
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Sell Your Soul
Nutmeg shaman



Registered: 03/15/00
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You should see some of the equations that I see when I'm tripping balls.
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LeftyBurnz
Mr. I Eat Butthole



Registered: 06/21/05
Posts: 24,570
Loc: FL
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Quote:
andyistic said:
Quote:
Rekkuzo said: How do I figure out:
e^2x - e^x =6
How do I solve for x?
I'm stumped.
e^2x = (e^x)^2 let z=e^x
z^2-z=6 Solve for z using standard quadratic methods.
Then: x=ln z
how in the fuck....... did you actually do that or did you just type a bunch of shit?? lol
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LeftyBurnz
Mr. I Eat Butthole



Registered: 06/21/05
Posts: 24,570
Loc: FL
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Quote:
andyistic said: You should see some of the equations that I see when I'm tripping balls.
really? i see patterns and pictures.
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Sell Your Soul
Nutmeg shaman



Registered: 03/15/00
Posts: 40,819
Loc: Over there
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I didn't forget everything from my days in school. The few brain cells that still work happen to be the ones that handle technical details.
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LeftyBurnz
Mr. I Eat Butthole



Registered: 06/21/05
Posts: 24,570
Loc: FL
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where the fuck did you learn that? college? i never saw anything like that in HS. then again i was a tard at math.
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Sell Your Soul
Nutmeg shaman



Registered: 03/15/00
Posts: 40,819
Loc: Over there
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Yes, college. They would never teach that to high school kids, especially the ones these days who only listen to rap. I don't know a single rap song that has lyrics which refer to logarithms.
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